<template>
  <div id="aCoursesList" class="bg-fa of">
    <!-- /课程详情 开始 -->
    <section class="container">
      <section class="path-wrap txtOf hLh30">
        <a :href="'/'" title class="c-999 fsize14">首页</a>
        \
        <a href="#" title class="c-999 fsize14">{{course.subjectLevelOne}}</a>
        \
        <span class="c-333 fsize14">{{course.subjectLevelTwo}}</span>
      </section>
      <div>
        <article class="c-v-pic-wrap" style="height: 357px;">
          <section class="p-h-video-box" id="videoPlay">
            <img height="357px" :src="course.cover" :alt="course.title" class="dis c-v-pic">
          </section>
        </article>
        <aside class="c-attr-wrap">
          <section class="ml20 mr15">
            <h2 class="hLh30 txtOf mt15">
              <span class="c-fff fsize24">{{course.title}}</span>
            </h2>
            <section class="c-attr-jg">
              <span class="c-fff">价格：</span>
              <b class="c-yellow" style="font-size:24px;">￥{{course.price}}</b>
            </section>
            <section class="c-attr-mt c-attr-undis">
              <span class="c-fff fsize14">主讲： {{course.teacherName}}&nbsp;&nbsp;&nbsp;</span>
            </section>
            <section class="c-attr-mt of">
              <span class="ml10 vam">
                <em class="icon18 scIcon"></em>
                <a class="c-fff vam" title="收藏" href="#">收藏</a>
              </span>
            </section>
            <section class="c-attr-mt" v-if="Number(course.price) === 0||this.isBuy">
              <a  href="javascript:void(0)" title="立即观看" class="comm-btn c-btn-3">立即观看</a>
            </section>
            <section class="c-attr-mt" v-else>
              <a @click="createOrder()" href="javascript:void(0)" title="立即购买" class="comm-btn c-btn-3">立即购买</a>
            </section>
          </section>
        </aside>
        <aside class="thr-attr-box">
          <ol class="thr-attr-ol clearfix">
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">购买数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{course.buyCount}}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">课时数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{course.lessonNum}}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">浏览数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{course.viewCount}}</h6>
              </aside>
            </li>
          </ol>
        </aside>
        <div class="clear"></div>
      </div>
      <!-- /课程封面介绍 -->
      <div class="mt20 c-infor-box">
        <article class="fl col-7">
          <section class="mr30">
            <div class="i-box">
              <div>
                <section id="c-i-tabTitle" class="c-infor-tabTitle c-tab-title">
                  <a name="c-i" class="current" title="课程详情">课程详情</a>
                </section>
              </div>
              <article class="ml10 mr10 pt20">
                <div>
                  <h6 class="c-i-content c-infor-title">
                    <span>课程介绍</span>
                  </h6>
                  <div class="course-txt-body-wrap">
                    <section class="course-txt-body">
                      <p v-html="course.description">
                        <!--{{course.description}}-->
                      </p>
                    </section>
                  </div>
                </div>
                <!-- /课程介绍 -->
                <div class="mt50">
                  <h6 class="c-g-content c-infor-title">
                    <span>课程大纲</span>
                  </h6>
                  <section class="mt20">
                    <div class="lh-menu-wrap">
                      <menu id="lh-menu" class="lh-menu mt10 mr10">
                        <ul>
                          <!-- 文件目录 -->
                          <li class="lh-menu-stair" v-for="chapter in chapterVideoList"
                              :key="chapter.id">
                            <a href="javascript: void(0)" :title="chapter.title"
                               class="current-1">
                              <em class="lh-menu-i-1 icon18 mr10"></em>{{chapter.title}}
                            </a>

                            <ol class="lh-menu-ol" style="display: block;">
                              <li class="lh-menu-second ml30"
                                  v-for="video in chapter.children" :key="video.id">
                                <a :href="'/player/'+video.videoSourceId"
                                   target="_blank" title>
                                  <span class="fr">
                                    <i class="free-icon vam mr10">免费试听</i>
                                  </span>
                                  <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{video.title}}
                                </a>
                              </li>
                            </ol>
                          </li>
                        </ul>
                      </menu>
                    </div>
                  </section>
                </div>
                <!-- /课程大纲 -->
              </article>
            </div>
          </section>
        </article>
        <aside class="fl col-3">
          <div class="i-box">
            <div>
              <section class="c-infor-tabTitle c-tab-title">
                <a title href="javascript:void(0)">主讲讲师</a>
              </section>
              <section class="stud-act-list">
                <ul style="height: auto;">
                  <li>
                    <div class="u-face">
                      <a href="#">
                        <img :src="course.avatar" width="50"
                             height="50" alt>
                      </a>
                    </div>
                    <section class="hLh30 txtOf">
                      <a class="c-333 fsize16 fl" :href="'/teacher/'+course.teacherId">{{course.teacherName}}</a>
                    </section>
                    <section class="hLh20 txtOf">
                      <span class="c-999">{{course.intro}}</span>
                    </section>
                  </li>
                </ul>
              </section>
            </div>
          </div>
        </aside>
        <div class="clear"></div>
      </div>
      <!-- /课程详情 结束 -->
      <div class="mt50 commentHtml">
        <div>
          <h6 class="c-c-content c-infor-title" id="i-art-comment">
            <span class="commentTitle">课程评论</span>
          </h6>
          <section class="lh-bj-list pr mt20 replyhtml">
            <ul>
              <li class="unBr">
                <aside class="noter-pic">
                  <img width="50" height="50" class="picImg" src="~/assets/img/avatar-boy.gif">
                </aside>
                <div class="of">
                  <section class="n-reply-wrap">
                    <fieldset>
                      <textarea name="" v-model="comment.content" placeholder="输入您要评论的文字" id="commentContent"></textarea>
                    </fieldset>
                    <p class="of mt5 tar pl10 pr10">
                      <span class="fl "><tt class="c-red commentContentmeg"
                                            style="display: none;"></tt></span>
                      <input type="button" @click="addComment()" value="评论" class="lh-reply-btn">
                    </p>
                  </section>
                </div>
              </li>
            </ul>
          </section>
          <section class="">
            <section class="question-list lh-bj-list pr">
              <ul class="pr10">
                <li v-for="(comment,index) in data.records" v-bind:key="index">
                  <aside class="noter-pic">
                    <img width="50" height="50" class="picImg" :src="comment.avatar">
                  </aside>
                  <div class="of">
                    <span class="fl">
                    <font class="fsize12 c-blue">
                      {{comment.nickname}}</font>
                    <font class="fsize12 c-999 ml5">评论：</font></span>
                  </div>
                  <div class="noter-txt mt5">
                    <p>{{comment.content}}</p>
                  </div>
                  <div class="of mt5">
                    <span class="fr"><font class="fsize12 c-999 ml5">{{comment.gmtCreate}}</font></span>
                  </div>
                </li>
              </ul>
            </section>
          </section>
          <!-- 公共分页 开始 -->
          <div>
            <div class="paging">
              <!-- undisable这个class是否存在，取决于数据属性hasPrevious -->
              <a
                :class="{undisable: !data.hasPrevious}"
                href="#"
                title="首页"
                @click.prevent="gotoPage(1)">首页</a>

              <a
                v-if="data.hasPrevious"
                :class="{undisable: !data.hasPrevious}"
                href="#"
                title="前一页"
                @click.prevent="gotoPage(data.current-1)">&lt;</a>

              <a
                v-for="page in data.pages"
                :key="page"
                :class="{current: data.current == page, undisable: data.current == page}"
                :title="'第'+page+'页'"
                href="#"
                @click.prevent="gotoPage(page)">{{ page }}</a>

              <a
                v-if="data.hasNext"
                :class="{undisable: !data.hasNext}"
                href="#"
                title="后一页"
                @click.prevent="gotoPage(data.current+1)">&gt;</a>

              <a
                :class="{undisable: !data.hasNext}"
                href="#"
                title="末页"
                @click.prevent="gotoPage(data.pages)">末页</a>
              <div class="clear"></div>
            </div>
          </div>
          <!-- 公共分页 结束 -->

        </div>

      </div>
    </section>

  </div>
</template>

<script>
  import courseApi from "@/api/course";
  import commentApi from "@/api/comment";
  import orderApi from "@/api/order";
  import cookie from "js-cookie";

  export default {
      data() {
        return {
          id: '',
          course: {
            id: '',
            subjectLevelOne: '',
            subjectLevelTwo: '',
            title: '',
            price: 0,
            lessonNum: 0,
            cover: '',
            buyCount: 0,
            viewCount: 0,
            description: '',
            teacherId: '',
            teacherName: '',
            intro: '',
            avatar: '',
            subjectLevelOneId: '',
            subjectLevelTwoId: ''
          },
          current: 1,
          size: 4,
          total: 10,
          data: {},
          comment: {
            content: '',
            courseId: ''
          },
          chapterVideoList: [],
          isBuy:false,
          loginInfo: {
            id: '',
            age: '',
            avatar: '',
            mobile: '',
            nickname: '',
            sex: ''
          }
        }
      },

      created() {
        this.id = this.$route.params.id
        this.getCourseInfo()
        this.initComment()

      },
      methods: {
        getCourseInfo() {
          courseApi.getCourseInfo(this.id).then(response => {

            if (response.data.data.courseWebVo !== null) {
              this.course = response.data.data.courseWebVo

            }
            this.chapterVideoList = response.data.data.chapterVoList
            this.isBuy = response.data.data.isBuy
          })
        },
        initComment() {
          commentApi.getCommentList(this.current, this.size, this.id).then(response => {
            this.data = response.data.data
          })
        },

        addComment() {
          //从cookie中获取信息
          let user = cookie.get('guli_user_center');
          //把字符串转换为json对象
          if(user){
            this.loginInfo = JSON.parse(user)
          } else {
            this.$message.error('您暂未登录,无法发表评论');
            return;
          }

          this.comment.courseId = this.id
          this.comment.teacherId = this.course.teacherId
          this.comment.memberId = this.loginInfo.id
          this.comment.nickname = this.loginInfo.nickname
          this.comment.avatar = this.loginInfo.avatar

          commentApi.addComment(this.comment).then(response => {
            if (response.data.success) {
              this.$message({
                message: '评论成功',
                type: 'success'
              });
              this.comment.content = ''
              this.initComment()
            } else{
              //提示
              this.$message.error('您暂未登录,无法发表评论');
              this.comment.content = ''
            }
          })
        },
        gotoPage(current) {
          commentApi.getCommentList(current, this.size, this.courseId).then(response => {
            this.data = response.data.data
          })
        },
        createOrder(){
          orderApi.createOrder(this.id).then(response=>{
            if(!response.data.success){
              //提示
              this.$message.error(`${response.data.message}`);
            }else{
              this.$router.push({
                path:'/orders/'+response.data.data.orderNo
              })
            }
          })
        }
      }
    }
</script>

<style scoped>

</style>
